Aero-servo-elastic analysis of a complex hypersonic aircraft is presented in this paper.A structure geometry was designed and built based on the X-43A vehicle.First, a three-dimensional structural finite element model was proposed with effective two-dimensional elements, which can obtain effective modal analysis results without useless local modes.
The purpose of this study was to explore the professional impact that a youth-centered service-learning program had on college students.Participants were 34 undergraduate students (28 females, 6 males) enrolled in an academic core course that Irrigation Sleeves integrated Lifetime Exercise and Physical Activity Service-Learning (LE PAS), an after-s
In the course of their missions or training, alpinists, but also mountain combat forces and mountain security services, professional miners, aircrew, aircraft and glider pilots and helicopter crews are regularly exposed to altitude without oxygen supplementation.At altitude, humans are exposed to systemic environmental hypoxia induced by the decrea
Although the vibration of rackets and the location of the sweet spot for players when hitting the ball is crucial, manufacturers do not specify this behavior precisely.This article analyses padel rackets, provides a solution to determine the sweet spot position Temperature Sensor (SSP), quantifies its behavior, and determines the level of vibration